Experimental Aerobic-Anaerobic Thoracic Empyema in the Guinea Pig

Constantine Mavroudis, Brian L. Ganzel, Sara K. Cox, Hiram C. Polk

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The clinical and pathological features of experimental aerobic-anaerobic thoracic empyema in the Duncan-Harley guinea pig are described. Thoracic empyema development and early death (< 14 days after bacterial inoculation) were noted after various concentrations and species were inoculated into the pleural space with a piece of umbilical tape, which was used as a cofactor. The effect of concomitant hemothorax was also tested. Gram-negative infection was found to have a more virulent course than Gram-positive infection in the thoracic cavity. Moreover, these findings support the thesis that intrathoracic inoculation of anaerobic bacteria, even in combination with other anaerobic species, fails to produce clinical empyemas. However, anaerobic bacteria appear to enhance synergistically the virulence of sublethal and sub-empyema-forming concentrations of aerobic bacteria such as Staphylococcus aureus and Escherichia coli.

Original languageEnglish (US)
Pages (from-to)298-302
Number of pages5
JournalAnnals of Thoracic Surgery
Issue number3
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine


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